一起電流互感器的故障分析及改進措施

 

張洪鐵，沙云鵬，馮祥偉

(平高集團有限公司，河南 平頂山 467000)

 

    摘 要：介紹了一起ZHW15-40.5 復合式組合電器的電流互感器精度異常的故障。通過對產(chǎn)品結(jié)構(gòu)的分析，從電流互感器的工作原理角度找到了故障的起因，并對產(chǎn)品的一個螺栓連接的結(jié)構(gòu)進行了改進，解決了電流互感器故障。結(jié)果表明：在以后的產(chǎn)品結(jié)構(gòu)設計時，應盡量避免圍繞電流互感器線圈生成的閉合回路，防止影響電流互感器的正常工作。

    關鍵詞：電流互感器精度；勵磁電流；復合式組合電器；二次線圈匝數(shù)

    中圖分類號：TM452     文獻標識碼：B      文章編號：1007-3175(2016)07-0044-03

 

Fault Analysis and Improvement Measure of Current Transformer

    Abstract: Introduction was made to an accident of abnormal current transformer precision of ZHW15-40.5 combined type composite apparatus. This paper analyzed the product structure and found the failure reason from the corner of the working principle of current transformers. The structure of the products bolted connection was improved to eliminate the current transformer faults. In subsequent product structure design the closed loop circuit generated around the current transformer should be avoided, to prevent the regular work of the current transformer from being affected.

    Key words: current transformer precision; exciting current; combined type composite apparatus; secondary coil turns number